Project-declaredLean 4.29.0-rc6
Vitali covering lemma
DeGiorgi.vitali_covering_lemma
Project documentation
Vitali covering lemma (5r-covering): from any family of balls, one can extract a disjoint subfamily such that the 5Ć enlargements cover the union, and every original ball meets a selected ball of at least half its radius.
partial differential equationsregularity theoryanalysis
Source project: DeGiorgi
Person-level attribution pending.